Home / 91,218.50-125,887.72-50,931.40

Finding the Fourth Proportional to 91,218.50, 125,887.72 and 50,931.40

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Solution

The fourth proportional to 91,218.50, 125,887.72 and 50,931.40 is: 70,288.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,218.50 : 125,887.72 = 50,931.40 : x
  2. Step 2: Convert to fraction form
    91,218.50/125,887.72 = 50,931.40/x
  3. Step 3: Cross multiply
    91,218.50x = 125,887.72 × 50,931.40
  4. Step 4: Simplify right side
    91,218.50x = 6,411,637,711.90
  5. Step 5: Solve for x
    x = 6,411,637,711.90/91,218.50
  6. Step 6: Final answer
    x = 70,288.78

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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.