Home / 74,639.10-103,011.38-42,807.32

Finding the Fourth Proportional to 74,639.10, 103,011.38 and 42,807.32

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Solution

The fourth proportional to 74,639.10, 103,011.38 and 42,807.32 is: 59,079.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,639.10 : 103,011.38 = 42,807.32 : x
  2. Step 2: Convert to fraction form
    74,639.10/103,011.38 = 42,807.32/x
  3. Step 3: Cross multiply
    74,639.10x = 103,011.38 × 42,807.32
  4. Step 4: Simplify right side
    74,639.10x = 4,409,640,378.21
  5. Step 5: Solve for x
    x = 4,409,640,378.21/74,639.10
  6. Step 6: Final answer
    x = 59,079.50

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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.