Home / 76,547.81-105,639.58-42,556.86

Finding the Fourth Proportional to 76,547.81, 105,639.58 and 42,556.86

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Solution

The fourth proportional to 76,547.81, 105,639.58 and 42,556.86 is: 58,730.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,547.81 : 105,639.58 = 42,556.86 : x
  2. Step 2: Convert to fraction form
    76,547.81/105,639.58 = 42,556.86/x
  3. Step 3: Cross multiply
    76,547.81x = 105,639.58 × 42,556.86
  4. Step 4: Simplify right side
    76,547.81x = 4,495,688,869.71
  5. Step 5: Solve for x
    x = 4,495,688,869.71/76,547.81
  6. Step 6: Final answer
    x = 58,730.47

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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.