Home / 91,430.71-126,172.08-51,146.17

Finding the Fourth Proportional to 91,430.71, 126,172.08 and 51,146.17

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Solution

The fourth proportional to 91,430.71, 126,172.08 and 51,146.17 is: 70,580.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,430.71 : 126,172.08 = 51,146.17 : x
  2. Step 2: Convert to fraction form
    91,430.71/126,172.08 = 51,146.17/x
  3. Step 3: Cross multiply
    91,430.71x = 126,172.08 × 51,146.17
  4. Step 4: Simplify right side
    91,430.71x = 6,453,218,337.50
  5. Step 5: Solve for x
    x = 6,453,218,337.50/91,430.71
  6. Step 6: Final answer
    x = 70,580.43

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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.