Home / 78,439,586.32-108,202,422.12-47,069,520.40

Finding the Fourth Proportional to 78,439,586.32, 108,202,422.12 and 47,069,520.40

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Solution

The fourth proportional to 78,439,586.32, 108,202,422.12 and 47,069,520.40 is: 64,929,410.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,439,586.32 : 108,202,422.12 = 47,069,520.40 : x
  2. Step 2: Convert to fraction form
    78,439,586.32/108,202,422.12 = 47,069,520.40/x
  3. Step 3: Cross multiply
    78,439,586.32x = 108,202,422.12 × 47,069,520.40
  4. Step 4: Simplify right side
    78,439,586.32x = 5,093,036,115,306,751
  5. Step 5: Solve for x
    x = 5,093,036,115,306,751/78,439,586.32
  6. Step 6: Final answer
    x = 64,929,410.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.