Home / 56,918,138.77-78,547,056.84-30,812,655.75

Finding the Fourth Proportional to 56,918,138.77, 78,547,056.84 and 30,812,655.75

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Solution

The fourth proportional to 56,918,138.77, 78,547,056.84 and 30,812,655.75 is: 42,521,478.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,918,138.77 : 78,547,056.84 = 30,812,655.75 : x
  2. Step 2: Convert to fraction form
    56,918,138.77/78,547,056.84 = 30,812,655.75/x
  3. Step 3: Cross multiply
    56,918,138.77x = 78,547,056.84 × 30,812,655.75
  4. Step 4: Simplify right side
    56,918,138.77x = 2,420,243,422,586,603
  5. Step 5: Solve for x
    x = 2,420,243,422,586,603/56,918,138.77
  6. Step 6: Final answer
    x = 42,521,478.65

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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.