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Finding the Fourth Proportional to 56,373.90, 77,795.82 and 31,223.40

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Solution

The fourth proportional to 56,373.90, 77,795.82 and 31,223.40 is: 43,088.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,373.90 : 77,795.82 = 31,223.40 : x
  2. Step 2: Convert to fraction form
    56,373.90/77,795.82 = 31,223.40/x
  3. Step 3: Cross multiply
    56,373.90x = 77,795.82 × 31,223.40
  4. Step 4: Simplify right side
    56,373.90x = 2,429,050,006.19
  5. Step 5: Solve for x
    x = 2,429,050,006.19/56,373.90
  6. Step 6: Final answer
    x = 43,088.20

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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.