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Finding the Fourth Proportional to 64,400, 88,841.76 and 45,547.52

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Solution

The fourth proportional to 64,400, 88,841.76 and 45,547.52 is: 62,834.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,400 : 88,841.76 = 45,547.52 : x
  2. Step 2: Convert to fraction form
    64,400/88,841.76 = 45,547.52/x
  3. Step 3: Cross multiply
    64,400x = 88,841.76 × 45,547.52
  4. Step 4: Simplify right side
    64,400x = 4,046,521,840.44
  5. Step 5: Solve for x
    x = 4,046,521,840.44/64,400
  6. Step 6: Final answer
    x = 62,834.19

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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.