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Finding the Fourth Proportional to 83,487.81, 115,212.88 and 45,248.28

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Solution

The fourth proportional to 83,487.81, 115,212.88 and 45,248.28 is: 62,442.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,487.81 : 115,212.88 = 45,248.28 : x
  2. Step 2: Convert to fraction form
    83,487.81/115,212.88 = 45,248.28/x
  3. Step 3: Cross multiply
    83,487.81x = 115,212.88 × 45,248.28
  4. Step 4: Simplify right side
    83,487.81x = 5,213,184,427.61
  5. Step 5: Solve for x
    x = 5,213,184,427.61/83,487.81
  6. Step 6: Final answer
    x = 62,442.47

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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.