Home / 74,130.09-102,306.81-42,303.77

Finding the Fourth Proportional to 74,130.09, 102,306.81 and 42,303.77

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Solution

The fourth proportional to 74,130.09, 102,306.81 and 42,303.77 is: 58,383.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,130.09 : 102,306.81 = 42,303.77 : x
  2. Step 2: Convert to fraction form
    74,130.09/102,306.81 = 42,303.77/x
  3. Step 3: Cross multiply
    74,130.09x = 102,306.81 × 42,303.77
  4. Step 4: Simplify right side
    74,130.09x = 4,327,963,790.43
  5. Step 5: Solve for x
    x = 4,327,963,790.43/74,130.09
  6. Step 6: Final answer
    x = 58,383.36

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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.