Home / 91,878.12-126,803.55-56,060.54

Finding the Fourth Proportional to 91,878.12, 126,803.55 and 56,060.54

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Solution

The fourth proportional to 91,878.12, 126,803.55 and 56,060.54 is: 77,370.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,878.12 : 126,803.55 = 56,060.54 : x
  2. Step 2: Convert to fraction form
    91,878.12/126,803.55 = 56,060.54/x
  3. Step 3: Cross multiply
    91,878.12x = 126,803.55 × 56,060.54
  4. Step 4: Simplify right side
    91,878.12x = 7,108,674,852.90
  5. Step 5: Solve for x
    x = 7,108,674,852.90/91,878.12
  6. Step 6: Final answer
    x = 77,370.70

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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.