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Finding the Fourth Proportional to 70,984.86, 106,966.95 and 64,321.05

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Solution

The fourth proportional to 70,984.86, 106,966.95 and 64,321.05 is: 96,925.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,984.86 : 106,966.95 = 64,321.05 : x
  2. Step 2: Convert to fraction form
    70,984.86/106,966.95 = 64,321.05/x
  3. Step 3: Cross multiply
    70,984.86x = 106,966.95 × 64,321.05
  4. Step 4: Simplify right side
    70,984.86x = 6,880,226,539.30
  5. Step 5: Solve for x
    x = 6,880,226,539.30/70,984.86
  6. Step 6: Final answer
    x = 96,925.27

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.