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Finding the Fourth Proportional to 64,812.40, 97,218.60 and 60,438.40

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Solution

The fourth proportional to 64,812.40, 97,218.60 and 60,438.40 is: 90,657.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,812.40 : 97,218.60 = 60,438.40 : x
  2. Step 2: Convert to fraction form
    64,812.40/97,218.60 = 60,438.40/x
  3. Step 3: Cross multiply
    64,812.40x = 97,218.60 × 60,438.40
  4. Step 4: Simplify right side
    64,812.40x = 5,875,736,634.24
  5. Step 5: Solve for x
    x = 5,875,736,634.24/64,812.40
  6. Step 6: Final answer
    x = 90,657.60

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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.