Home / 70,350.06-97,088.64-40,128.45

Finding the Fourth Proportional to 70,350.06, 97,088.64 and 40,128.45

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Solution

The fourth proportional to 70,350.06, 97,088.64 and 40,128.45 is: 55,380.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,350.06 : 97,088.64 = 40,128.45 : x
  2. Step 2: Convert to fraction form
    70,350.06/97,088.64 = 40,128.45/x
  3. Step 3: Cross multiply
    70,350.06x = 97,088.64 × 40,128.45
  4. Step 4: Simplify right side
    70,350.06x = 3,896,016,635.81
  5. Step 5: Solve for x
    x = 3,896,016,635.81/70,350.06
  6. Step 6: Final answer
    x = 55,380.43

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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.