Home / 74,155.19-102,339.39-42,328.86

Finding the Fourth Proportional to 74,155.19, 102,339.39 and 42,328.86

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Solution

The fourth proportional to 74,155.19, 102,339.39 and 42,328.86 is: 58,416.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,155.19 : 102,339.39 = 42,328.86 : x
  2. Step 2: Convert to fraction form
    74,155.19/102,339.39 = 42,328.86/x
  3. Step 3: Cross multiply
    74,155.19x = 102,339.39 × 42,328.86
  4. Step 4: Simplify right side
    74,155.19x = 4,331,909,711.80
  5. Step 5: Solve for x
    x = 4,331,909,711.80/74,155.19
  6. Step 6: Final answer
    x = 58,416.81

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1.5x scale

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.