Home / 42,657.40-63,986.10-39,287.80

Finding the Fourth Proportional to 42,657.40, 63,986.10 and 39,287.80

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Solution

The fourth proportional to 42,657.40, 63,986.10 and 39,287.80 is: 58,931.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,657.40 : 63,986.10 = 39,287.80 : x
  2. Step 2: Convert to fraction form
    42,657.40/63,986.10 = 39,287.80/x
  3. Step 3: Cross multiply
    42,657.40x = 63,986.10 × 39,287.80
  4. Step 4: Simplify right side
    42,657.40x = 2,513,873,099.58
  5. Step 5: Solve for x
    x = 2,513,873,099.58/42,657.40
  6. Step 6: Final answer
    x = 58,931.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.