Home / 76,206.40-105,168.16-42,671.68

Finding the Fourth Proportional to 76,206.40, 105,168.16 and 42,671.68

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Solution

The fourth proportional to 76,206.40, 105,168.16 and 42,671.68 is: 58,888.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,206.40 : 105,168.16 = 42,671.68 : x
  2. Step 2: Convert to fraction form
    76,206.40/105,168.16 = 42,671.68/x
  3. Step 3: Cross multiply
    76,206.40x = 105,168.16 × 42,671.68
  4. Step 4: Simplify right side
    76,206.40x = 4,487,702,069.71
  5. Step 5: Solve for x
    x = 4,487,702,069.71/76,206.40
  6. Step 6: Final answer
    x = 58,888.78

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.