Home / 72,005.16-99,364.80-39,298.32

Finding the Fourth Proportional to 72,005.16, 99,364.80 and 39,298.32

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Solution

The fourth proportional to 72,005.16, 99,364.80 and 39,298.32 is: 54,230.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,005.16 : 99,364.80 = 39,298.32 : x
  2. Step 2: Convert to fraction form
    72,005.16/99,364.80 = 39,298.32/x
  3. Step 3: Cross multiply
    72,005.16x = 99,364.80 × 39,298.32
  4. Step 4: Simplify right side
    72,005.16x = 3,904,869,707.14
  5. Step 5: Solve for x
    x = 3,904,869,707.14/72,005.16
  6. Step 6: Final answer
    x = 54,230.41

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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.