Home / 74,880.06-103,335.75-40,890.30

Finding the Fourth Proportional to 74,880.06, 103,335.75 and 40,890.30

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Solution

The fourth proportional to 74,880.06, 103,335.75 and 40,890.30 is: 56,429.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,880.06 : 103,335.75 = 40,890.30 : x
  2. Step 2: Convert to fraction form
    74,880.06/103,335.75 = 40,890.30/x
  3. Step 3: Cross multiply
    74,880.06x = 103,335.75 × 40,890.30
  4. Step 4: Simplify right side
    74,880.06x = 4,225,429,818.23
  5. Step 5: Solve for x
    x = 4,225,429,818.23/74,880.06
  6. Step 6: Final answer
    x = 56,429.31

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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.