Home / 74,870.91-103,319.14-40,878.77

Finding the Fourth Proportional to 74,870.91, 103,319.14 and 40,878.77

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Solution

The fourth proportional to 74,870.91, 103,319.14 and 40,878.77 is: 56,411.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,870.91 : 103,319.14 = 40,878.77 : x
  2. Step 2: Convert to fraction form
    74,870.91/103,319.14 = 40,878.77/x
  3. Step 3: Cross multiply
    74,870.91x = 103,319.14 × 40,878.77
  4. Step 4: Simplify right side
    74,870.91x = 4,223,559,360.66
  5. Step 5: Solve for x
    x = 4,223,559,360.66/74,870.91
  6. Step 6: Final answer
    x = 56,411.22

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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.