Home / 76,315.87-105,316.21-42,327.53

Finding the Fourth Proportional to 76,315.87, 105,316.21 and 42,327.53

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Solution

The fourth proportional to 76,315.87, 105,316.21 and 42,327.53 is: 58,412.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,315.87 : 105,316.21 = 42,327.53 : x
  2. Step 2: Convert to fraction form
    76,315.87/105,316.21 = 42,327.53/x
  3. Step 3: Cross multiply
    76,315.87x = 105,316.21 × 42,327.53
  4. Step 4: Simplify right side
    76,315.87x = 4,457,775,038.26
  5. Step 5: Solve for x
    x = 4,457,775,038.26/76,315.87
  6. Step 6: Final answer
    x = 58,412.16

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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.