Home / 76,126.09-105,052.44-42,132.55

Finding the Fourth Proportional to 76,126.09, 105,052.44 and 42,132.55

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Solution

The fourth proportional to 76,126.09, 105,052.44 and 42,132.55 is: 58,142.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,126.09 : 105,052.44 = 42,132.55 : x
  2. Step 2: Convert to fraction form
    76,126.09/105,052.44 = 42,132.55/x
  3. Step 3: Cross multiply
    76,126.09x = 105,052.44 × 42,132.55
  4. Step 4: Simplify right side
    76,126.09x = 4,426,127,075.59
  5. Step 5: Solve for x
    x = 4,426,127,075.59/76,126.09
  6. Step 6: Final answer
    x = 58,142.05

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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.