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Finding the Fourth Proportional to 90,294.88, 134,893.20 and 58,445.47

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Solution

The fourth proportional to 90,294.88, 134,893.20 and 58,445.47 is: 87,312.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,294.88 : 134,893.20 = 58,445.47 : x
  2. Step 2: Convert to fraction form
    90,294.88/134,893.20 = 58,445.47/x
  3. Step 3: Cross multiply
    90,294.88x = 134,893.20 × 58,445.47
  4. Step 4: Simplify right side
    90,294.88x = 7,883,895,507.11
  5. Step 5: Solve for x
    x = 7,883,895,507.11/90,294.88
  6. Step 6: Final answer
    x = 87,312.77

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.