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Finding the Fourth Proportional to 92,866, 128,155.08 and 53,122

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Solution

The fourth proportional to 92,866, 128,155.08 and 53,122 is: 73,308.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,866 : 128,155.08 = 53,122 : x
  2. Step 2: Convert to fraction form
    92,866/128,155.08 = 53,122/x
  3. Step 3: Cross multiply
    92,866x = 128,155.08 × 53,122
  4. Step 4: Simplify right side
    92,866x = 6,807,854,159.76
  5. Step 5: Solve for x
    x = 6,807,854,159.76/92,866
  6. Step 6: Final answer
    x = 73,308.36

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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.