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Finding the Fourth Proportional to 67,643.60, 101,465.40 and 65,915.60

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Solution

The fourth proportional to 67,643.60, 101,465.40 and 65,915.60 is: 98,873.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,643.60 : 101,465.40 = 65,915.60 : x
  2. Step 2: Convert to fraction form
    67,643.60/101,465.40 = 65,915.60/x
  3. Step 3: Cross multiply
    67,643.60x = 101,465.40 × 65,915.60
  4. Step 4: Simplify right side
    67,643.60x = 6,688,152,720.24
  5. Step 5: Solve for x
    x = 6,688,152,720.24/67,643.60
  6. Step 6: Final answer
    x = 98,873.40

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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.