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Finding the Fourth Proportional to 68,398.08, 94,386.88 and 42,918.16

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Solution

The fourth proportional to 68,398.08, 94,386.88 and 42,918.16 is: 59,225.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,398.08 : 94,386.88 = 42,918.16 : x
  2. Step 2: Convert to fraction form
    68,398.08/94,386.88 = 42,918.16/x
  3. Step 3: Cross multiply
    68,398.08x = 94,386.88 × 42,918.16
  4. Step 4: Simplify right side
    68,398.08x = 4,050,911,217.74
  5. Step 5: Solve for x
    x = 4,050,911,217.74/68,398.08
  6. Step 6: Final answer
    x = 59,225.51

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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.