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Finding the Fourth Proportional to 67,693.60, 101,386.80 and 42,810.40

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Solution

The fourth proportional to 67,693.60, 101,386.80 and 42,810.40 is: 64,118.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,693.60 : 101,386.80 = 42,810.40 : x
  2. Step 2: Convert to fraction form
    67,693.60/101,386.80 = 42,810.40/x
  3. Step 3: Cross multiply
    67,693.60x = 101,386.80 × 42,810.40
  4. Step 4: Simplify right side
    67,693.60x = 4,340,409,462.72
  5. Step 5: Solve for x
    x = 4,340,409,462.72/67,693.60
  6. Step 6: Final answer
    x = 64,118.46

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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.