Home / 91,440.50-137,036.21-51,478.55

Finding the Fourth Proportional to 91,440.50, 137,036.21 and 51,478.55

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Solution

The fourth proportional to 91,440.50, 137,036.21 and 51,478.55 is: 77,147.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,440.50 : 137,036.21 = 51,478.55 : x
  2. Step 2: Convert to fraction form
    91,440.50/137,036.21 = 51,478.55/x
  3. Step 3: Cross multiply
    91,440.50x = 137,036.21 × 51,478.55
  4. Step 4: Simplify right side
    91,440.50x = 7,054,424,703.11
  5. Step 5: Solve for x
    x = 7,054,424,703.11/91,440.50
  6. Step 6: Final answer
    x = 77,147.70

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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.