Home / 91,904.10-137,856.15-52,465.20

Finding the Fourth Proportional to 91,904.10, 137,856.15 and 52,465.20

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Solution

The fourth proportional to 91,904.10, 137,856.15 and 52,465.20 is: 78,697.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,904.10 : 137,856.15 = 52,465.20 : x
  2. Step 2: Convert to fraction form
    91,904.10/137,856.15 = 52,465.20/x
  3. Step 3: Cross multiply
    91,904.10x = 137,856.15 × 52,465.20
  4. Step 4: Simplify right side
    91,904.10x = 7,232,650,480.98
  5. Step 5: Solve for x
    x = 7,232,650,480.98/91,904.10
  6. Step 6: Final answer
    x = 78,697.80

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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.