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Finding the Fourth Proportional to 66,077,999.70, 99,116,999.55 and 40,249,967.10

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Solution

The fourth proportional to 66,077,999.70, 99,116,999.55 and 40,249,967.10 is: 60,374,950.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,077,999.70 : 99,116,999.55 = 40,249,967.10 : x
  2. Step 2: Convert to fraction form
    66,077,999.70/99,116,999.55 = 40,249,967.10/x
  3. Step 3: Cross multiply
    66,077,999.70x = 99,116,999.55 × 40,249,967.10
  4. Step 4: Simplify right side
    66,077,999.70x = 3,989,455,970,938,215
  5. Step 5: Solve for x
    x = 3,989,455,970,938,215/66,077,999.70
  6. Step 6: Final answer
    x = 60,374,950.65

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.