Home / 72,341.08-99,828.40-40,074.40

Finding the Fourth Proportional to 72,341.08, 99,828.40 and 40,074.40

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Solution

The fourth proportional to 72,341.08, 99,828.40 and 40,074.40 is: 55,301.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,341.08 : 99,828.40 = 40,074.40 : x
  2. Step 2: Convert to fraction form
    72,341.08/99,828.40 = 40,074.40/x
  3. Step 3: Cross multiply
    72,341.08x = 99,828.40 × 40,074.40
  4. Step 4: Simplify right side
    72,341.08x = 4,000,563,232.96
  5. Step 5: Solve for x
    x = 4,000,563,232.96/72,341.08
  6. Step 6: Final answer
    x = 55,301.40

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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.