Home / 42,864.10-64,305.34-21,807.08

Finding the Fourth Proportional to 42,864.10, 64,305.34 and 21,807.08

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Solution

The fourth proportional to 42,864.10, 64,305.34 and 21,807.08 is: 32,715.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,864.10 : 64,305.34 = 21,807.08 : x
  2. Step 2: Convert to fraction form
    42,864.10/64,305.34 = 21,807.08/x
  3. Step 3: Cross multiply
    42,864.10x = 64,305.34 × 21,807.08
  4. Step 4: Simplify right side
    42,864.10x = 1,402,311,693.81
  5. Step 5: Solve for x
    x = 1,402,311,693.81/42,864.10
  6. Step 6: Final answer
    x = 32,715.30

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.