Home / 56,893,139.61-78,512,532.63-30,787,657.40

Finding the Fourth Proportional to 56,893,139.61, 78,512,532.63 and 30,787,657.40

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Solution

The fourth proportional to 56,893,139.61, 78,512,532.63 and 30,787,657.40 is: 42,486,967.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,893,139.61 : 78,512,532.63 = 30,787,657.40 : x
  2. Step 2: Convert to fraction form
    56,893,139.61/78,512,532.63 = 30,787,657.40/x
  3. Step 3: Cross multiply
    56,893,139.61x = 78,512,532.63 × 30,787,657.40
  4. Step 4: Simplify right side
    56,893,139.61x = 2,417,216,956,299,588.50
  5. Step 5: Solve for x
    x = 2,417,216,956,299,588.50/56,893,139.61
  6. Step 6: Final answer
    x = 42,486,967.20

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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.