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Finding the Fourth Proportional to 70,038.54, 105,077.25 and 38,895.66

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Solution

The fourth proportional to 70,038.54, 105,077.25 and 38,895.66 is: 58,354.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,038.54 : 105,077.25 = 38,895.66 : x
  2. Step 2: Convert to fraction form
    70,038.54/105,077.25 = 38,895.66/x
  3. Step 3: Cross multiply
    70,038.54x = 105,077.25 × 38,895.66
  4. Step 4: Simplify right side
    70,038.54x = 4,087,048,989.74
  5. Step 5: Solve for x
    x = 4,087,048,989.74/70,038.54
  6. Step 6: Final answer
    x = 58,354.29

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1.5x scale

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.