Home / 74,041.12-102,176.64-40,507.12

Finding the Fourth Proportional to 74,041.12, 102,176.64 and 40,507.12

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Solution

The fourth proportional to 74,041.12, 102,176.64 and 40,507.12 is: 55,899.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,041.12 : 102,176.64 = 40,507.12 : x
  2. Step 2: Convert to fraction form
    74,041.12/102,176.64 = 40,507.12/x
  3. Step 3: Cross multiply
    74,041.12x = 102,176.64 × 40,507.12
  4. Step 4: Simplify right side
    74,041.12x = 4,138,881,417.68
  5. Step 5: Solve for x
    x = 4,138,881,417.68/74,041.12
  6. Step 6: Final answer
    x = 55,899.77

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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.