Home / 92,875.60-139,323.12-57,786.40

Finding the Fourth Proportional to 92,875.60, 139,323.12 and 57,786.40

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Solution

The fourth proportional to 92,875.60, 139,323.12 and 57,786.40 is: 86,685.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,875.60 : 139,323.12 = 57,786.40 : x
  2. Step 2: Convert to fraction form
    92,875.60/139,323.12 = 57,786.40/x
  3. Step 3: Cross multiply
    92,875.60x = 139,323.12 × 57,786.40
  4. Step 4: Simplify right side
    92,875.60x = 8,050,981,541.57
  5. Step 5: Solve for x
    x = 8,050,981,541.57/92,875.60
  6. Step 6: Final answer
    x = 86,685.65

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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.