Home / 88,217.69-121,740.91-47,931.78

Finding the Fourth Proportional to 88,217.69, 121,740.91 and 47,931.78

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Solution

The fourth proportional to 88,217.69, 121,740.91 and 47,931.78 is: 66,146.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,217.69 : 121,740.91 = 47,931.78 : x
  2. Step 2: Convert to fraction form
    88,217.69/121,740.91 = 47,931.78/x
  3. Step 3: Cross multiply
    88,217.69x = 121,740.91 × 47,931.78
  4. Step 4: Simplify right side
    88,217.69x = 5,835,258,515.12
  5. Step 5: Solve for x
    x = 5,835,258,515.12/88,217.69
  6. Step 6: Final answer
    x = 66,146.13

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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.