Home / 70,454.12-105,715.76-28,332.50

Finding the Fourth Proportional to 70,454.12, 105,715.76 and 28,332.50

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Solution

The fourth proportional to 70,454.12, 105,715.76 and 28,332.50 is: 42,512.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,454.12 : 105,715.76 = 28,332.50 : x
  2. Step 2: Convert to fraction form
    70,454.12/105,715.76 = 28,332.50/x
  3. Step 3: Cross multiply
    70,454.12x = 105,715.76 × 28,332.50
  4. Step 4: Simplify right side
    70,454.12x = 2,995,191,312.45
  5. Step 5: Solve for x
    x = 2,995,191,312.45/70,454.12
  6. Step 6: Final answer
    x = 42,512.65

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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.