Home / 93,031.41-128,379.47-52,747.90

Finding the Fourth Proportional to 93,031.41, 128,379.47 and 52,747.90

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Solution

The fourth proportional to 93,031.41, 128,379.47 and 52,747.90 is: 72,789.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,031.41 : 128,379.47 = 52,747.90 : x
  2. Step 2: Convert to fraction form
    93,031.41/128,379.47 = 52,747.90/x
  3. Step 3: Cross multiply
    93,031.41x = 128,379.47 × 52,747.90
  4. Step 4: Simplify right side
    93,031.41x = 6,771,747,445.61
  5. Step 5: Solve for x
    x = 6,771,747,445.61/93,031.41
  6. Step 6: Final answer
    x = 72,789.90

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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.