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Finding the Fourth Proportional to 92,951.70, 139,427.55 and 57,911.10

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Solution

The fourth proportional to 92,951.70, 139,427.55 and 57,911.10 is: 86,866.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,951.70 : 139,427.55 = 57,911.10 : x
  2. Step 2: Convert to fraction form
    92,951.70/139,427.55 = 57,911.10/x
  3. Step 3: Cross multiply
    92,951.70x = 139,427.55 × 57,911.10
  4. Step 4: Simplify right side
    92,951.70x = 8,074,402,790.81
  5. Step 5: Solve for x
    x = 8,074,402,790.81/92,951.70
  6. Step 6: Final answer
    x = 86,866.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.