Home / 74,315.16-102,554.64-40,323.78

Finding the Fourth Proportional to 74,315.16, 102,554.64 and 40,323.78

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Solution

The fourth proportional to 74,315.16, 102,554.64 and 40,323.78 is: 55,646.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,315.16 : 102,554.64 = 40,323.78 : x
  2. Step 2: Convert to fraction form
    74,315.16/102,554.64 = 40,323.78/x
  3. Step 3: Cross multiply
    74,315.16x = 102,554.64 × 40,323.78
  4. Step 4: Simplify right side
    74,315.16x = 4,135,390,741.34
  5. Step 5: Solve for x
    x = 4,135,390,741.34/74,315.16
  6. Step 6: Final answer
    x = 55,646.66

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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.