Home / 74,640.10-103,012.76-42,808.32

Finding the Fourth Proportional to 74,640.10, 103,012.76 and 42,808.32

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Solution

The fourth proportional to 74,640.10, 103,012.76 and 42,808.32 is: 59,080.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,640.10 : 103,012.76 = 42,808.32 : x
  2. Step 2: Convert to fraction form
    74,640.10/103,012.76 = 42,808.32/x
  3. Step 3: Cross multiply
    74,640.10x = 103,012.76 × 42,808.32
  4. Step 4: Simplify right side
    74,640.10x = 4,409,803,194.16
  5. Step 5: Solve for x
    x = 4,409,803,194.16/74,640.10
  6. Step 6: Final answer
    x = 59,080.89

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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.