Home / 91,515.12-126,369.68-57,580.16

Finding the Fourth Proportional to 91,515.12, 126,369.68 and 57,580.16

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Solution

The fourth proportional to 91,515.12, 126,369.68 and 57,580.16 is: 79,510.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,515.12 : 126,369.68 = 57,580.16 : x
  2. Step 2: Convert to fraction form
    91,515.12/126,369.68 = 57,580.16/x
  3. Step 3: Cross multiply
    91,515.12x = 126,369.68 × 57,580.16
  4. Step 4: Simplify right side
    91,515.12x = 7,276,386,393.55
  5. Step 5: Solve for x
    x = 7,276,386,393.55/91,515.12
  6. Step 6: Final answer
    x = 79,510.21

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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.