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Finding the Fourth Proportional to 71,377.60, 98,501.88 and 39,547

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Solution

The fourth proportional to 71,377.60, 98,501.88 and 39,547 is: 54,575.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,377.60 : 98,501.88 = 39,547 : x
  2. Step 2: Convert to fraction form
    71,377.60/98,501.88 = 39,547/x
  3. Step 3: Cross multiply
    71,377.60x = 98,501.88 × 39,547
  4. Step 4: Simplify right side
    71,377.60x = 3,895,453,848.36
  5. Step 5: Solve for x
    x = 3,895,453,848.36/71,377.60
  6. Step 6: Final answer
    x = 54,575.30

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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.