Home / 71,487.15-98,664.08-39,666.30

Finding the Fourth Proportional to 71,487.15, 98,664.08 and 39,666.30

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Solution

The fourth proportional to 71,487.15, 98,664.08 and 39,666.30 is: 54,746.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,487.15 : 98,664.08 = 39,666.30 : x
  2. Step 2: Convert to fraction form
    71,487.15/98,664.08 = 39,666.30/x
  3. Step 3: Cross multiply
    71,487.15x = 98,664.08 × 39,666.30
  4. Step 4: Simplify right side
    71,487.15x = 3,913,638,996.50
  5. Step 5: Solve for x
    x = 3,913,638,996.50/71,487.15
  6. Step 6: Final answer
    x = 54,746.05

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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.