Home / 76,306.47-105,313.74-42,322.47

Finding the Fourth Proportional to 76,306.47, 105,313.74 and 42,322.47

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Solution

The fourth proportional to 76,306.47, 105,313.74 and 42,322.47 is: 58,411.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,306.47 : 105,313.74 = 42,322.47 : x
  2. Step 2: Convert to fraction form
    76,306.47/105,313.74 = 42,322.47/x
  3. Step 3: Cross multiply
    76,306.47x = 105,313.74 × 42,322.47
  4. Step 4: Simplify right side
    76,306.47x = 4,457,137,601.74
  5. Step 5: Solve for x
    x = 4,457,137,601.74/76,306.47
  6. Step 6: Final answer
    x = 58,411.01

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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.