Home / 54,374.08-74,956.80-38,430.40

Finding the Fourth Proportional to 54,374.08, 74,956.80 and 38,430.40

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Solution

The fourth proportional to 54,374.08, 74,956.80 and 38,430.40 is: 52,977.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,374.08 : 74,956.80 = 38,430.40 : x
  2. Step 2: Convert to fraction form
    54,374.08/74,956.80 = 38,430.40/x
  3. Step 3: Cross multiply
    54,374.08x = 74,956.80 × 38,430.40
  4. Step 4: Simplify right side
    54,374.08x = 2,880,619,806.72
  5. Step 5: Solve for x
    x = 2,880,619,806.72/54,374.08
  6. Step 6: Final answer
    x = 52,977.81

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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.