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Finding the Fourth Proportional to 70,289.80, 105,434.70 and 63,510.10

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Solution

The fourth proportional to 70,289.80, 105,434.70 and 63,510.10 is: 95,265.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,289.80 : 105,434.70 = 63,510.10 : x
  2. Step 2: Convert to fraction form
    70,289.80/105,434.70 = 63,510.10/x
  3. Step 3: Cross multiply
    70,289.80x = 105,434.70 × 63,510.10
  4. Step 4: Simplify right side
    70,289.80x = 6,696,168,340.47
  5. Step 5: Solve for x
    x = 6,696,168,340.47/70,289.80
  6. Step 6: Final answer
    x = 95,265.15

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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.