Home / 90,008.64-124,219.35-51,780.60

Finding the Fourth Proportional to 90,008.64, 124,219.35 and 51,780.60

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Solution

The fourth proportional to 90,008.64, 124,219.35 and 51,780.60 is: 71,461.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,008.64 : 124,219.35 = 51,780.60 : x
  2. Step 2: Convert to fraction form
    90,008.64/124,219.35 = 51,780.60/x
  3. Step 3: Cross multiply
    90,008.64x = 124,219.35 × 51,780.60
  4. Step 4: Simplify right side
    90,008.64x = 6,432,152,474.61
  5. Step 5: Solve for x
    x = 6,432,152,474.61/90,008.64
  6. Step 6: Final answer
    x = 71,461.50

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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.