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Finding the Fourth Proportional to 92,720.35, 139,033.95 and 45,339.13

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Solution

The fourth proportional to 92,720.35, 139,033.95 and 45,339.13 is: 67,985.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,720.35 : 139,033.95 = 45,339.13 : x
  2. Step 2: Convert to fraction form
    92,720.35/139,033.95 = 45,339.13/x
  3. Step 3: Cross multiply
    92,720.35x = 139,033.95 × 45,339.13
  4. Step 4: Simplify right side
    92,720.35x = 6,303,678,333.46
  5. Step 5: Solve for x
    x = 6,303,678,333.46/92,720.35
  6. Step 6: Final answer
    x = 67,985.92

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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.