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Finding the Fourth Proportional to 42,435.64, 63,653.64 and 14,355.91

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Solution

The fourth proportional to 42,435.64, 63,653.64 and 14,355.91 is: 21,533.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,435.64 : 63,653.64 = 14,355.91 : x
  2. Step 2: Convert to fraction form
    42,435.64/63,653.64 = 14,355.91/x
  3. Step 3: Cross multiply
    42,435.64x = 63,653.64 × 14,355.91
  4. Step 4: Simplify right side
    42,435.64x = 913,805,927.01
  5. Step 5: Solve for x
    x = 913,805,927.01/42,435.64
  6. Step 6: Final answer
    x = 21,533.93

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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.