Home / 83,645.28-115,430.88-45,919.50

Finding the Fourth Proportional to 83,645.28, 115,430.88 and 45,919.50

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Solution

The fourth proportional to 83,645.28, 115,430.88 and 45,919.50 is: 63,369.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,645.28 : 115,430.88 = 45,919.50 : x
  2. Step 2: Convert to fraction form
    83,645.28/115,430.88 = 45,919.50/x
  3. Step 3: Cross multiply
    83,645.28x = 115,430.88 × 45,919.50
  4. Step 4: Simplify right side
    83,645.28x = 5,300,528,294.16
  5. Step 5: Solve for x
    x = 5,300,528,294.16/83,645.28
  6. Step 6: Final answer
    x = 63,369.13

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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.