Home / 76,639.73-105,792.25-57,574.81

Finding the Fourth Proportional to 76,639.73, 105,792.25 and 57,574.81

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Solution

The fourth proportional to 76,639.73, 105,792.25 and 57,574.81 is: 79,475.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,639.73 : 105,792.25 = 57,574.81 : x
  2. Step 2: Convert to fraction form
    76,639.73/105,792.25 = 57,574.81/x
  3. Step 3: Cross multiply
    76,639.73x = 105,792.25 × 57,574.81
  4. Step 4: Simplify right side
    76,639.73x = 6,090,968,430.71
  5. Step 5: Solve for x
    x = 6,090,968,430.71/76,639.73
  6. Step 6: Final answer
    x = 79,475.34

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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.