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Finding the Fourth Proportional to 61,174.78, 84,428.60 and 34,312.21

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Solution

The fourth proportional to 61,174.78, 84,428.60 and 34,312.21 is: 47,355.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,174.78 : 84,428.60 = 34,312.21 : x
  2. Step 2: Convert to fraction form
    61,174.78/84,428.60 = 34,312.21/x
  3. Step 3: Cross multiply
    61,174.78x = 84,428.60 × 34,312.21
  4. Step 4: Simplify right side
    61,174.78x = 2,896,931,853.21
  5. Step 5: Solve for x
    x = 2,896,931,853.21/61,174.78
  6. Step 6: Final answer
    x = 47,355.00

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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.