Home / 76,740.40-105,903.56-42,751.16

Finding the Fourth Proportional to 76,740.40, 105,903.56 and 42,751.16

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Solution

The fourth proportional to 76,740.40, 105,903.56 and 42,751.16 is: 58,997.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,740.40 : 105,903.56 = 42,751.16 : x
  2. Step 2: Convert to fraction form
    76,740.40/105,903.56 = 42,751.16/x
  3. Step 3: Cross multiply
    76,740.40x = 105,903.56 × 42,751.16
  4. Step 4: Simplify right side
    76,740.40x = 4,527,500,038.13
  5. Step 5: Solve for x
    x = 4,527,500,038.13/76,740.40
  6. Step 6: Final answer
    x = 58,997.61

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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.