Home / 78,510.08-108,344.70-42,700.92

Finding the Fourth Proportional to 78,510.08, 108,344.70 and 42,700.92

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Solution

The fourth proportional to 78,510.08, 108,344.70 and 42,700.92 is: 58,927.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,510.08 : 108,344.70 = 42,700.92 : x
  2. Step 2: Convert to fraction form
    78,510.08/108,344.70 = 42,700.92/x
  3. Step 3: Cross multiply
    78,510.08x = 108,344.70 × 42,700.92
  4. Step 4: Simplify right side
    78,510.08x = 4,626,418,367.12
  5. Step 5: Solve for x
    x = 4,626,418,367.12/78,510.08
  6. Step 6: Final answer
    x = 58,927.70

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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.