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Finding the Fourth Proportional to 91,358.17, 126,075.21 and 51,074.17

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Solution

The fourth proportional to 91,358.17, 126,075.21 and 51,074.17 is: 70,482.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,358.17 : 126,075.21 = 51,074.17 : x
  2. Step 2: Convert to fraction form
    91,358.17/126,075.21 = 51,074.17/x
  3. Step 3: Cross multiply
    91,358.17x = 126,075.21 × 51,074.17
  4. Step 4: Simplify right side
    91,358.17x = 6,439,186,201.61
  5. Step 5: Solve for x
    x = 6,439,186,201.61/91,358.17
  6. Step 6: Final answer
    x = 70,482.87

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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.