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Finding the Fourth Proportional to 68,332.50, 94,307.07 and 40,038.20

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Solution

The fourth proportional to 68,332.50, 94,307.07 and 40,038.20 is: 55,257.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,332.50 : 94,307.07 = 40,038.20 : x
  2. Step 2: Convert to fraction form
    68,332.50/94,307.07 = 40,038.20/x
  3. Step 3: Cross multiply
    68,332.50x = 94,307.07 × 40,038.20
  4. Step 4: Simplify right side
    68,332.50x = 3,775,884,858.54
  5. Step 5: Solve for x
    x = 3,775,884,858.54/68,332.50
  6. Step 6: Final answer
    x = 55,257.53

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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.